overlay profiles: Drop mentions of net-dns/bind-tools

We are not building this package anymore.

Author: krnowak

sdk_container/src/third_party/coreos-overlay/profiles/coreos/amd64/generic/package.use

@@ -3,5 +3,4 @@
 sys-firmware/intel-microcode vanilla
 
 # Enable gssapi only for amd64, to avoid build errors in arm64.
-net-dns/bind-tools           gssapi
 net-dns/bind                 gssapi

sdk_container/src/third_party/coreos-overlay/profiles/coreos/arm64/package.use

@@ -1,5 +1,4 @@
 # arm64 use
 
 # Disable gssapi for arm64 to avoid build errors
-net-dns/bind-tools -gssapi
 net-dns/bind       -gssapi

sdk_container/src/third_party/coreos-overlay/profiles/coreos/targets/sdk/package.use

@@ -33,5 +33,4 @@ x11-libs/pixman static-libs
 app-emulation/qemu -pin-upstream-blobs
 
 # Enable gssapi for SDK
-net-dns/bind-tools           gssapi
 net-dns/bind                 gssapi